Migrate (Network)ErrorScreen to ScreenContext

chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h

Index: chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
diff --git a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
index 0bdc23a1aae4999857912758c42a52adb79bd100..b1ae29660c14a0e4f9ecd7e89a8d94d12e530b3f 100644
--- a/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
+++ b/chrome/browser/ui/webui/chromeos/login/gaia_screen_handler.h
@@ -23,6 +23,7 @@ class ConsumerManagementService;
 namespace chromeos {
 
 class SigninScreenHandler;
+class SigninScreenHandlerDelegate;
 
 // A class that's used to specify the way how Gaia should be loaded.
 struct GaiaContext {
@@ -187,7 +188,7 @@ class GaiaScreenHandler : public BaseScreenHandler {
 
   // TODO (ygorshenin@): GaiaScreenHandler should implement
   // NetworkStateInformer::Observer.
-  void UpdateState(ErrorScreenActor::ErrorReason reason);
+  void UpdateState(NetworkError::ErrorReason reason);
 
   // TODO (ygorshenin@): remove this dependency.
   void SetSigninScreenHandler(SigninScreenHandler* handler);